TWI699552B - Wide-angle lens assembly - Google Patents

Wide-angle lens assembly Download PDF

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Publication number
TWI699552B
TWI699552B TW106115951A TW106115951A TWI699552B TW I699552 B TWI699552 B TW I699552B TW 106115951 A TW106115951 A TW 106115951A TW 106115951 A TW106115951 A TW 106115951A TW I699552 B TWI699552 B TW I699552B
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lens
refractive power
image side
wide
surface facing
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TW106115951A
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Chinese (zh)
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TW201901230A (en
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邱偉庭
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大陸商信泰光學（深圳）有限公司
亞洲光學股份有限公司
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Priority to TW106115951A priority Critical patent/TWI699552B/en
Priority to US15/848,095 priority patent/US10598908B2/en
Priority to CN201810160629.0A priority patent/CN108873248B/en
Publication of TW201901230A publication Critical patent/TW201901230A/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/62—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having six components only

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  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
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Abstract

A wide-angle lens assembly includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. The first lens is a meniscus lens with negative refractive power. The second lens is with negative refractive power and includes a convex surface facing an object side. The third lens is with positive refractive power and includes a convex surface facing the object side. The fourth lens is with positive refractive power and includes a convex surface facing an image side. The fifth lens is with negative refractive power and includes a convex surface facing the image side. The sixth lens is with positive refractive power. The first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are arranged in order from the object side to the image side along an optical axis.

Description

廣角鏡頭(十三) Wide-angle lens (13)

本發明係有關於一種廣角鏡頭。 The invention relates to a wide-angle lens.

現今的廣角鏡頭之發展趨勢，除了不斷朝向小型化、大視場與大光圈發展外，隨著不同的應用需求，還需具備抗劇烈環境溫度變化的能力，習知的成像鏡頭已經無法滿足現今的需求，需要有另一種新架構的成像鏡頭，才能同時滿足小型化、大視場、大光圈及抗劇烈環境溫度變化的需求。 The development trend of today’s wide-angle lens is not only toward miniaturization, large field of view, and large aperture. With different application requirements, it also needs the ability to resist severe environmental temperature changes. Conventional imaging lenses can no longer meet today’s Demands require another imaging lens with a new architecture to meet the needs of miniaturization, large field of view, large aperture, and resistance to severe environmental temperature changes.

有鑑於此，本發明之主要目的在於提供一種廣角鏡頭，其鏡頭總長度短小、視場較大、光圈值較小、抗劇烈環境溫度變化，但是仍具有良好的光學性能。 In view of this, the main purpose of the present invention is to provide a wide-angle lens, which has a short overall lens length, a large field of view, a small aperture value, resistance to severe environmental temperature changes, but still has good optical performance.

本發明之廣角鏡頭包括一第一透鏡、一第二透鏡、一第三透鏡、一第四透鏡、一第五透鏡及一第六透鏡。第一透鏡具有負屈光力且為彎月型透鏡。第二透鏡具有負屈光力且包括一凸面朝向物側。第三透鏡具有正屈光力且包括一凸面朝向物側。第四透鏡具有正屈光力且包括一凸面朝向像側。第五透鏡具有負屈光力且包括一凸面朝向像側。第六透鏡具有正屈光力。其中第一透鏡、第二透鏡、第三透鏡、第四透鏡、第五透鏡以及第六透鏡沿著一光軸從物側至像側依序排列。 The wide-angle lens of the present invention includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The first lens has negative refractive power and is a meniscus lens. The second lens has negative refractive power and includes a convex surface facing the object side. The third lens has positive refractive power and includes a convex surface facing the object side. The fourth lens has positive refractive power and includes a convex surface facing the image side. The fifth lens has negative refractive power and includes a convex surface facing the image side. The sixth lens has positive refractive power. The first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are arranged in order from the object side to the image side along an optical axis.

本發明之廣角鏡頭包括一第一透鏡、一第二透鏡、一第三透鏡、一光圈、一第四透鏡、一第五透鏡及一第六透鏡。第一透鏡具有負屈光力且為彎月型透鏡。第二透鏡具有負屈光力且包括一凸面朝向物側。第三透鏡具有正屈光力且包括一凸面朝向物側。第四透鏡具有正屈光力且包括一凸面朝向像側。第五透鏡具有負屈光力。第六透鏡具有正屈光力。其中第一透鏡、第二透鏡、第三透鏡、一光圈、第四透鏡、第五透鏡以及第六透鏡沿著一光軸從物側至像側依序排列。 The wide-angle lens of the present invention includes a first lens, a second lens, a third lens, an aperture, a fourth lens, a fifth lens, and a sixth lens. The first lens has negative refractive power and is a meniscus lens. The second lens has negative refractive power and includes a convex surface facing the object side. The third lens has positive refractive power and includes a convex surface facing the object side. The fourth lens has positive refractive power and includes a convex surface facing the image side. The fifth lens has negative refractive power. The sixth lens has positive refractive power. The first lens, the second lens, the third lens, an aperture, the fourth lens, the fifth lens and the sixth lens are arranged in order from the object side to the image side along an optical axis.

其中該第一透鏡更包括一凸面朝向物側以及一凹面朝向像側，該第二透鏡可更包括一凹面朝向像側該第三透鏡可更包括一凹面朝向像側，該第四透鏡可更包括一凹面朝向物側，該第五透鏡可更包括一凹面朝向物側以及一凸面朝向像側，該第六透鏡為雙凸透鏡。 The first lens further includes a convex surface facing the object side and a concave surface facing the image side. The second lens may further include a concave surface facing the image side. The third lens may further include a concave surface facing the image side. It includes a concave surface facing the object side, the fifth lens may further include a concave surface facing the object side and a convex surface facing the image side, and the sixth lens is a biconvex lens.

其中廣角鏡頭滿足以下條件：0.2

Figure 106115951-A0101-12-0002-45
BFL/TTL
Figure 106115951-A0101-12-0002-46
0.5；其中，BFL為第六透鏡之一像側面至一成像面於光軸上之一間距，TTL為第一透鏡之一物側面至成像面於光軸上之一間距。 The wide-angle lens meets the following conditions: 0.2
Figure 106115951-A0101-12-0002-45
BFL/TTL
Figure 106115951-A0101-12-0002-46
0.5; Wherein, BFL is a distance from an image side of the sixth lens to an imaging surface on the optical axis, and TTL is a distance from an object side of the first lens to the imaging surface on the optical axis.

其中廣角鏡頭滿足以下條件：Vd4-Vd5

Figure 106115951-A0101-12-0002-47
50、Nd3-Nd1
Figure 106115951-A0101-12-0002-48
0.35；其中，Vd4為第四透鏡之一阿貝係數，Vd5為第五透鏡之一阿貝係數，Nd1為第一透鏡之一折射率，Nd3為第三透鏡之一折射率。 The wide-angle lens meets the following conditions: Vd 4 -Vd 5
Figure 106115951-A0101-12-0002-47
50, Nd 3 -Nd 1
Figure 106115951-A0101-12-0002-48
0.35; where Vd 4 is an Abbe number of the fourth lens, Vd 5 is an Abbe number of the fifth lens, Nd 1 is a refractive index of the first lens, and Nd 3 is a refractive index of the third lens.

其中廣角鏡頭滿足以下條件：79

Figure 106115951-A0101-12-0002-49
Vd4-Vd5
Figure 106115951-A0101-12-0002-50
50、0.59
Figure 106115951-A0101-12-0002-52
Nd3-Nd1
Figure 106115951-A0101-12-0002-53
0.35；其中，Vd4為第四透鏡之一阿貝係數，Vd5為第五透鏡之一阿貝係數，Nd1為第一透鏡之一折射率，Nd3為第三透鏡之一折射率。 The wide-angle lens meets the following conditions: 79
Figure 106115951-A0101-12-0002-49
Vd 4 -Vd 5
Figure 106115951-A0101-12-0002-50
50, 0.59
Figure 106115951-A0101-12-0002-52
Nd 3 -Nd 1
Figure 106115951-A0101-12-0002-53
0.35; where Vd 4 is an Abbe number of the fourth lens, Vd 5 is an Abbe number of the fifth lens, Nd 1 is a refractive index of the first lens, and Nd 3 is a refractive index of the third lens.

其中廣角鏡頭滿足以下條件：Sag2/D2

Figure 106115951-A0101-12-0002-54
0.24、Sag4/D4
Figure 106115951-A0101-12-0002-55
0.29；其中，Sag2為第一透鏡之一像側面之一有效直徑凹陷量， D2為第一透鏡之像側面之一有效直徑，Sag4為第二透鏡之一像側面之一有效直徑凹陷量，D4為第二透鏡之像側面之一有效直徑。 The wide-angle lens meets the following conditions: Sag 2 /D 2
Figure 106115951-A0101-12-0002-54
0.24, Sag 4 /D 4
Figure 106115951-A0101-12-0002-55
0.29; Among them, Sag 2 is an effective diameter depression of one of the image side surfaces of the first lens, D 2 is an effective diameter of an image side surface of the first lens, and Sag 4 is the effective diameter depressions of an image side of the second lens D 4 is an effective diameter of the image side surface of the second lens.

其中廣角鏡頭滿足以下條件：0.5

Figure 106115951-A0101-12-0003-57
Sag2/D2
Figure 106115951-A0101-12-0003-58
0.24、1
Figure 106115951-A0101-12-0003-59
Sag4/D4
Figure 106115951-A0101-12-0003-60
0.29；其中，Sag2為第一透鏡之一像側面之一有效直徑凹陷量，D2為第一透鏡之像側面之一有效直徑，Sag4為第二透鏡之一像側面之一有效直徑凹陷量，D4為第二透鏡之像側面之一有效直徑。 The wide-angle lens meets the following conditions: 0.5
Figure 106115951-A0101-12-0003-57
Sag 2 /D 2
Figure 106115951-A0101-12-0003-58
0.24, 1
Figure 106115951-A0101-12-0003-59
Sag 4 /D 4
Figure 106115951-A0101-12-0003-60
0.29; Among them, Sag 2 is an effective diameter depression of one of the image side surfaces of the first lens, D 2 is an effective diameter of an image side surface of the first lens, and Sag 4 is the effective diameter depressions of an image side of the second lens D 4 is an effective diameter of the image side surface of the second lens.

其中第四透鏡及第五透鏡互相膠合，第二透鏡包括一非球面表面，第六透鏡包括一非球面表面。 The fourth lens and the fifth lens are cemented with each other, the second lens includes an aspheric surface, and the sixth lens includes an aspheric surface.

其中廣角鏡頭滿足以下條件：20度/mm<DFOV/f<30度/mm；其中，DFOV為廣角鏡頭之一對角線視場，此對角線視場之單位為度，f為廣角鏡頭之一有效焦距，此有效焦距之單位為mm。 The wide-angle lens satisfies the following conditions: 20 degrees/mm<DFOV/f<30 degrees/mm; among them, DFOV is a diagonal field of view of the wide-angle lens, the unit of this diagonal field of view is degree, and f is valid for one of the wide-angle lenses Focal length, the unit of effective focal length is mm.

為使本發明之上述目的、特徵、和優點能更明顯易懂，下文特舉較佳實施例並配合所附圖式做詳細說明。 In order to make the above-mentioned objects, features, and advantages of the present invention more obvious and understandable, preferred embodiments are described in detail below in conjunction with the accompanying drawings.

1、2、3‧‧‧廣角鏡頭 1, 2, 3‧‧‧Wide-angle lens

L11、L21、L31‧‧‧第一透鏡 L11, L21, L31‧‧‧First lens

L12、L22、L32‧‧‧第二透鏡 L12, L22, L32‧‧‧Second lens

L13、L23、L33‧‧‧第三透鏡 L13, L23, L33‧‧‧third lens

L14、L24、L34‧‧‧第四透鏡 L14, L24, L34‧‧‧Fourth lens

L15、L25、L35‧‧‧第五透鏡 L15, L25, L35‧‧‧Fifth lens

L16、L26、L36‧‧‧第六透鏡 L16, L26, L36‧‧‧Sixth lens

ST1、ST2、ST3‧‧‧光圈 ST1, ST2, ST3‧‧‧Aperture

OF1、OF2、OF3‧‧‧濾光片 OF1, OF2, OF3‧‧‧Filter

OA1、OA2、OA3‧‧‧光軸 OA1, OA2, OA3‧‧‧Optical axis

IMA1、IMA2、IMA3‧‧‧成像面 IMA1, IMA2, IMA3‧‧‧imaging surface

Sag12、Sag14‧‧‧有效直徑凹陷量 Sag1 2 、Sag1 4 ‧‧‧The effective diameter of depression

D12、D14‧‧‧有效直徑 D1 2 、D1 4 ‧‧‧effective diameter

S11、S12、S13、S14、S15‧‧‧面 S11, S12, S13, S14, S15‧‧‧face

S16、S17、S18、S19、S110‧‧‧面 S16, S17, S18, S19, S110‧‧‧face

S111、S112、S113、S114‧‧‧面 S111, S112, S113, S114‧‧‧ surface

S21、S22、S23、S24、S25‧‧‧面 S21, S22, S23, S24, S25‧‧‧surface

S26、S27、S28、S29、S210‧‧‧面 S26, S27, S28, S29, S210‧‧‧face

S211、S212、S213、S214‧‧‧面 S211, S212, S213, S214‧‧‧ surface

S31、S32、S33、S34、S35‧‧‧面 S31, S32, S33, S34, S35‧‧‧surface

S36、S37、S38、S39、S310‧‧‧面 S36, S37, S38, S39, S310‧‧‧face

S311、S312、S313、S314‧‧‧面 S311, S312, S313, S314‧‧‧ surface

第1圖係依據本發明之廣角鏡頭之第一實施例的透鏡配置示意圖。 FIG. 1 is a schematic diagram of the lens configuration of the first embodiment of the wide-angle lens according to the present invention.

第2A圖係第1圖之廣角鏡頭之縱向像差(Longitudinal Aberration)圖。 Figure 2A is the Longitudinal Aberration diagram of the wide-angle lens in Figure 1.

第2B圖係第1圖之廣角鏡頭之場曲(Field Curvature)圖。 Figure 2B is the Field Curvature of the wide-angle lens in Figure 1.

第2C圖係第1圖之廣角鏡頭之畸變(Distortion)圖。 Figure 2C is the distortion diagram of the wide-angle lens in Figure 1.

第2D圖係第一實施例中，第一透鏡之Sag12及D12之示意圖。 Figure 2D is a schematic diagram of Sag1 2 and D1 2 of the first lens in the first embodiment.

第2E圖係第一實施例中，第二透鏡之Sag14及D14之示意圖。 FIG. 2E of the system of the first embodiment, Sag1 a schematic view of the second lens 4 and 4 of Dl.

第3圖係依據本發明之廣角鏡頭之第二實施例的透鏡配置示意圖。 FIG. 3 is a schematic diagram of the lens configuration of the second embodiment of the wide-angle lens according to the present invention.

第4A圖係依據本發明之廣角鏡頭之第二實施例的縱向像差(Longitudinal Aberration)圖。 FIG. 4A is a diagram of Longitudinal Aberration of the second embodiment of the wide-angle lens according to the present invention.

第4B圖係依據本發明之廣角鏡頭之第二實施例的場曲(Field Curvature)圖。 Fig. 4B is a field curve diagram of the second embodiment of the wide-angle lens according to the present invention.

第4C圖係依據本發明之廣角鏡頭之第二實施例的畸變(Distortion)圖。 Figure 4C is a distortion diagram of the second embodiment of the wide-angle lens according to the present invention.

第5圖係依據本發明之廣角鏡頭之第三實施例的透鏡配置示意圖。 FIG. 5 is a schematic diagram of the lens configuration of the third embodiment of the wide-angle lens according to the present invention.

第6A圖係依據本發明之廣角鏡頭之第三實施例的縱向像差(Longitudinal Aberration)圖。 FIG. 6A is a diagram of Longitudinal Aberration of the third embodiment of the wide-angle lens according to the present invention.

第6B圖係依據本發明之廣角鏡頭之第三實施例的場曲(Field Curvature)圖。 Fig. 6B is a field curve diagram of the third embodiment of the wide-angle lens according to the present invention.

第6C圖係依據本發明之廣角鏡頭之第三實施例的畸變(Distortion)圖。 Fig. 6C is a distortion diagram of the third embodiment of the wide-angle lens according to the present invention.

請參閱第1圖，第1圖係依據本發明之廣角鏡頭之第一實施例的透鏡配置示意圖。廣角鏡頭1沿著一光軸OA1從一物側至一像側依序包括一第一透鏡L11、一第二透鏡L12、一第三透鏡L13、一光圈ST1、一第四透鏡L14、一第五透鏡L15、一第六透鏡L16及一濾光片OF1。成像時，來自物側之光線最後成像於一成像面IMA1上。 Please refer to FIG. 1, which is a schematic diagram of the lens configuration of the first embodiment of the wide-angle lens according to the present invention. The wide-angle lens 1 includes a first lens L11, a second lens L12, a third lens L13, an aperture ST1, a fourth lens L14, and a fifth lens in order from an object side to an image side along an optical axis OA1. Lens L15, a sixth lens L16 and a filter OF1. When imaging, the light from the object side is finally imaged on an imaging surface IMA1.

第一透鏡L11為彎月型透鏡具有負屈光力由玻璃材質製成，其物側面S11為凸面，像側面S12為凹面，物側面S11與像側面S12皆為球面表面。 The first lens L11 is a meniscus lens with negative refractive power and is made of glass. The object side surface S11 is a convex surface, the image side surface S12 is a concave surface, and both the object side surface S11 and the image side surface S12 are spherical surfaces.

第二透鏡L12為彎月型透鏡具有負屈光力由玻璃材質製 成，其物側面S13為凸面，像側面S14為凹面，物側面S13與像側面S14皆為非球面表面。 The second lens L12 is a meniscus lens with negative refractive power and is made of glass. The object side surface S13 is convex, the image side surface S14 is concave, and both the object side surface S13 and the image side surface S14 are aspherical surfaces.

第三透鏡L13為彎月型透鏡具有正屈光力由玻璃材質製成，其物側面S15為凸面，像側面S16為凹面，物側面S15與像側面S16皆為球面表面。 The third lens L13 is a meniscus lens with positive refractive power and is made of glass. The object side S15 is convex, the image side S16 is concave, and both the object side S15 and the image side S16 are spherical surfaces.

第四透鏡L14為彎月型透鏡具有正屈光力由玻璃材質製成，其物側面S18為凹面，像側面S19為凸面，物側面S18與像側面S19皆為球面表面。 The fourth lens L14 is a meniscus lens with positive refractive power and is made of glass. The object side surface S18 is concave, the image side surface S19 is convex, and both the object side surface S18 and the image side surface S19 are spherical surfaces.

第五透鏡L15為彎月型透鏡具有負屈光力由玻璃材質製成，其物側面S19為凹面，像側面S110為凸面，物側面S19與像側面S110皆為球面表面。 The fifth lens L15 is a meniscus lens with negative refractive power and is made of glass. The object side surface S19 is a concave surface, the image side surface S110 is a convex surface, and both the object side surface S19 and the image side surface S110 are spherical surfaces.

上述第四透鏡L14與第五透鏡L15膠合。 The fourth lens L14 and the fifth lens L15 are cemented.

第六透鏡L16為雙凸透鏡具有正屈光力由玻璃材質製成，其物側面S111為凸面，像側面S112為凸面，物側面S111與像側面S112皆為非球面表面。 The sixth lens L16 is a biconvex lens with positive refractive power and is made of glass. The object side S111 is convex, the image side S112 is convex, and both the object side S111 and the image side S112 are aspherical surfaces.

濾光片OF1其物側面S113與像側面S114皆為平面。 The object side S113 and the image side S114 of the filter OF1 are both flat.

另外，第一實施例中的廣角鏡頭1至少滿足底下其中一條件： In addition, the wide-angle lens 1 in the first embodiment meets at least one of the following conditions:

Figure 106115951-A0101-12-0005-1
Figure 106115951-A0101-12-0005-1

Figure 106115951-A0101-12-0005-2
Figure 106115951-A0101-12-0005-2

Figure 106115951-A0101-12-0005-3
Figure 106115951-A0101-12-0005-3

Figure 106115951-A0101-12-0005-4
Figure 106115951-A0101-12-0005-4

Figure 106115951-A0101-12-0006-5
Figure 106115951-A0101-12-0006-5

20度/mm<DFOV1/f1<30度/mm (6) 20 degrees/mm<DFOV1/f1<30 degrees/mm (6)

其中，Sag12為第一透鏡L11之像側面S12之一有效直徑凹陷量，D12為第一透鏡L11之像側面S12之一有效直徑，Sag12及D12之示意圖請參閱第2D圖，Sag14為第二透鏡L12之像側面S14之一有效直徑凹陷量，D14為第二透鏡L12之像側面S14之一有效直徑，Sag14及D14之示意圖請參閱第2E圖，BFL1為第六透鏡L16之像側面S112至成像面IMA1於光軸OA1上之一間距，TTL1為第一透鏡L11之物側面S11至成像面IMA1於光軸OA1上之一間距，Vd14為第四透鏡L14之一阿貝係數，Vd15為第五透鏡L15之一阿貝係數，Nd11為第一透鏡L11之一折射率，Nd13為第三透鏡L13之一折射率，DFOV1為廣角鏡頭1之一對角線視場，f1為廣角鏡頭1之一有效焦距。 Wherein, the first lens L11 Sag1 2 as one of the effective amount of depression S12 diameter side, a first lens L11 D1 2 to the effective diameter of the image side surface of one of S12, a schematic diagram of Sag1 2 D1 2, and see FIG. 2D, SAG1 4 is an effective diameter of the image side surface S14 of the second lens L12, D1 4 is an effective diameter of the image side surface S14 of the second lens L12, the schematic diagram of Sag1 4 and D1 4 , please refer to Figure 2E, BFL1 is the sixth The distance between the image side surface S112 of the lens L16 and the imaging surface IMA1 on the optical axis OA1, TTL1 is the distance between the object side surface S11 of the first lens L11 and the imaging surface IMA1 on the optical axis OA1, Vd1 4 is the distance between the fourth lens L14 One Abbe coefficient, Vd1 5 is one of the Abbe coefficients of the fifth lens L15, Nd1 1 is the refractive index of the first lens L11, Nd1 3 is the refractive index of the third lens L13, DFOV1 is a diagonal of the wide-angle lens 1 Line field of view, f1 is one of the effective focal lengths of the wide-angle lens 1.

利用上述透鏡、光圈ST1及至少滿足條件(1)至條件(6)其中一條件之設計，使得廣角鏡頭1能有效的縮短鏡頭總長度、有效的縮小光圈值、有效的修正像差、抗劇烈環境溫度變化。 Utilizing the above-mentioned lens, aperture ST1, and a design that meets at least one of conditions (1) to (6), the wide-angle lens 1 can effectively shorten the total length of the lens, effectively reduce the aperture value, effectively correct aberrations, and resist severe environments temperature change.

若條件(4)Vd14-Vd15的數值小於50，則使消色差的功能欠佳。因此，Vd14-Vd15的數值至少須大於或等於50，所以最佳效果範圍為79

Figure 106115951-A0101-12-0006-61
Vd14-Vd15
Figure 106115951-A0101-12-0006-62
50，符合該範圍則具有最佳消色差條件。 If the value of the condition (4) Vd1 4 -Vd1 5 is less than 50, the achromatic function is poor. Therefore, the value of Vd1 4 -Vd1 5 must be at least greater than or equal to 50, so the best effect range is 79
Figure 106115951-A0101-12-0006-61
Vd1 4 -Vd1 5
Figure 106115951-A0101-12-0006-62
50. If it meets this range, it has the best achromatic condition.

表一為第1圖中廣角鏡頭1之各透鏡之相關參數表，表一資料顯示，第一實施例之廣角鏡頭1之有效焦距等於2.698mm、光圈值等於2.8、鏡頭總長度等於23.860mm、對角線視場等於97.44度。 Table 1 is a table of related parameters of each lens of the wide-angle lens 1 in Figure 1. The data in Table 1 shows that the effective focal length of the wide-angle lens 1 of the first embodiment is 2.698mm, the aperture value is 2.8, and the total lens length is 23.860mm, diagonally The linear field of view is equal to 97.44 degrees.

Figure 106115951-A0101-12-0007-6
Figure 106115951-A0101-12-0007-6

表一中各個透鏡之非球面表面凹陷度z由下列公式所得到：z=ch2/{1+[1-(k+1)c2h2]1/2}+Ah4+Bh6+Ch8+Dh10+Eh12+Fh14+Gh16 The concave degree z of the aspheric surface of each lens in Table 1 is obtained by the following formula: z=ch 2 /{1+[1-(k+1)c 2 h 2 ] 1/2 }+Ah 4 +Bh 6 + Ch 8 +Dh 10 +Eh 12 +Fh 14 +Gh 16

其中：c：曲率；h：透鏡表面任一點至光軸之垂直距離；k：圓錐係數；A~G：非球面係數。 Among them: c: curvature; h: the vertical distance from any point on the lens surface to the optical axis; k: conic coefficient; A~G: aspherical coefficient.

表二為表一中各個透鏡之非球面表面之相關參數表，其中k為圓錐係數(Conic Constant)、A~G為非球面係數。 Table 2 is the relevant parameter table of the aspheric surface of each lens in Table 1, where k is the Conic Constant and A~G are the aspheric coefficients.

Figure 106115951-A0101-12-0008-7
Figure 106115951-A0101-12-0008-7

表三為條件(1)至條件(6)中各參數值及條件(1)至條件(6)之計算值，由表三可知，第一實施例之廣角鏡頭1皆能滿足條件(1)至條件(6)之要求。 Table 3 shows the parameter values of conditions (1) to (6) and the calculated values of conditions (1) to (6). From Table 3, it can be seen that the wide-angle lens 1 of the first embodiment can all satisfy the conditions (1) to The requirements of condition (6).

Figure 106115951-A0101-12-0008-8
Figure 106115951-A0101-12-0008-8
Figure 106115951-A0101-12-0009-9
Figure 106115951-A0101-12-0009-9

另外，第一實施例之廣角鏡頭1的光學性能也可達到要求，這可從第2A至第2C圖看出。第2A圖所示的，是第一實施例之廣角鏡頭1的縱向像差(Longitudinal Aberration)圖。第2B圖所示的，是第一實施例之廣角鏡頭1的場曲(Field Curvature)圖。第2C圖所示的，是第一實施例之廣角鏡頭1的畸變(Distortion)圖。 In addition, the optical performance of the wide-angle lens 1 of the first embodiment can also meet the requirements, which can be seen from Figures 2A to 2C. FIG. 2A shows a longitudinal aberration diagram of the wide-angle lens 1 of the first embodiment. Figure 2B shows the field curvature of the wide-angle lens 1 of the first embodiment. Figure 2C shows a distortion (Distortion) diagram of the wide-angle lens 1 of the first embodiment.

由第2A圖可看出，第一實施例之廣角鏡頭1對波長為0.455μm、0.502μm、0.558μm、0.614μm、0.661μm之光線所產生的縱向像差值介於-0.015mm至0.01mm之間。 It can be seen from Figure 2A that the wide-angle lens 1 of the first embodiment has longitudinal aberration values between -0.015mm and 0.01mm for light with wavelengths of 0.455μm, 0.502μm, 0.558μm, 0.614μm, and 0.661μm. between.

由第2B圖可看出，第一實施例之廣角鏡頭1對波長為0.455μm、0.502μm、0.558μm、0.614μm、0.661μm之光線，於子午(Tangential)方向與弧矢(Sagittal)方向之場曲介於-0.04mm至0.04mm之間。 It can be seen from Figure 2B that the wide-angle lens 1 of the first embodiment has a field of light with wavelengths of 0.455μm, 0.502μm, 0.558μm, 0.614μm and 0.661μm in the Tangential direction and the Sagittal direction. The curve is between -0.04mm and 0.04mm.

由第2C圖(圖中的5條線幾乎重合，以致於看起來只有一條線)可看出，第一實施例之廣角鏡頭1對波長為0.455μm、0.502μm、0.558μm、0.614μm、0.661μm之光線所產生的畸變介於-4.5%至0.5%之間。 It can be seen from Figure 2C (the five lines in the figure are almost overlapped, so that there is only one line), it can be seen that the wavelength of the wide-angle lens 1 of the first embodiment is 0.455μm, 0.502μm, 0.558μm, 0.614μm, 0.661μm The distortion produced by the light is between -4.5% and 0.5%.

顯見第一實施例之廣角鏡頭1之縱向像差、場曲、畸變都能被有效修正，從而得到較佳的光學性能。 It is obvious that the longitudinal aberration, curvature of field, and distortion of the wide-angle lens 1 of the first embodiment can be effectively corrected, thereby obtaining better optical performance.

請參閱第3圖，第3圖係依據本發明之廣角鏡頭之第二實施例的透鏡配置示意圖。廣角鏡頭2沿著一光軸OA2從一物側至一像側依序包括一第一透鏡L21、一第二透鏡L22、一第三透鏡L23、一光圈ST2、一第四透鏡L24、一第五透鏡L25、一第六透鏡L26及一濾光片OF2。成像時，來自物側之光線最後成像於一成像面IMA2上。 Please refer to FIG. 3, which is a schematic diagram of the lens configuration of the second embodiment of the wide-angle lens according to the present invention. The wide-angle lens 2 includes a first lens L21, a second lens L22, a third lens L23, an aperture ST2, a fourth lens L24, and a fifth lens in order from an object side to an image side along an optical axis OA2. Lens L25, a sixth lens L26 and a filter OF2. When imaging, the light from the object side is finally imaged on an imaging surface IMA2.

第一透鏡L21為彎月型透鏡具有負屈光力由玻璃材質製成，其物側面S21為凸面，像側面S22為凹面，物側面S21與像側面S22皆為球面表面。 The first lens L21 is a meniscus lens with negative refractive power and is made of glass material. The object side surface S21 is a convex surface, the image side surface S22 is a concave surface, and both the object side surface S21 and the image side surface S22 are spherical surfaces.

第二透鏡L22為彎月型透鏡具有負屈光力由玻璃材質製成，其物側面S23為凸面，像側面S24為凹面，物側面S23與像側面S24皆為非球面表面。 The second lens L22 is a meniscus lens with negative refractive power and is made of glass. The object side surface S23 is a convex surface, the image side surface S24 is a concave surface, and both the object side surface S23 and the image side surface S24 are aspherical surfaces.

第三透鏡L23為彎月型透鏡具有正屈光力由玻璃材質製成，其物側面S25為凸面，像側面S26為凹面，物側面S25與像側面S26皆為球面表面。 The third lens L23 is a meniscus lens with positive refractive power and is made of glass. The object side surface S25 is convex, the image side surface S26 is concave, and both the object side surface S25 and the image side surface S26 are spherical surfaces.

第四透鏡L24為雙凸透鏡具有正屈光力由玻璃材質製成，其物側面S28為凸面，像側面S29為凸面，物側面S28與像側面S29皆為球面表面。 The fourth lens L24 is a biconvex lens with positive refractive power and is made of glass. The object side surface S28 is a convex surface, the image side surface S29 is a convex surface, and both the object side surface S28 and the image side surface S29 are spherical surfaces.

第五透鏡L25為彎月型透鏡具有負屈光力由玻璃材質製成，其物側面S29為凹面，像側面S210為凸面，物側面S29與像側面S210皆為球面表面。 The fifth lens L25 is a meniscus lens with negative refractive power and is made of glass. The object side surface S29 is concave, the image side surface S210 is convex, and both the object side surface S29 and the image side surface S210 are spherical surfaces.

上述第四透鏡L24與第五透鏡L25膠合。 The fourth lens L24 and the fifth lens L25 are cemented.

第六透鏡L26為雙凸透鏡具有正屈光力由玻璃材質製成， 其物側面S211為凸面，像側面S212為凸面，物側面S211與像側面S212皆為非球面表面。 The sixth lens L26 is a biconvex lens with positive refractive power and is made of glass. The object side surface S211 is a convex surface, the image side surface S212 is a convex surface, and both the object side surface S211 and the image side surface S212 are aspherical surfaces.

濾光片OF2其物側面S213與像側面S214皆為平面。 The object side S213 and the image side S214 of the filter OF2 are both flat surfaces.

另外，第二實施例中的廣角鏡頭2至少滿足底下其中一條件：

Figure 106115951-A0101-12-0011-10
In addition, the wide-angle lens 2 in the second embodiment meets at least one of the following conditions:
Figure 106115951-A0101-12-0011-10

Figure 106115951-A0101-12-0011-11
Figure 106115951-A0101-12-0011-11

Figure 106115951-A0101-12-0011-12
Figure 106115951-A0101-12-0011-12

Figure 106115951-A0101-12-0011-13
Figure 106115951-A0101-12-0011-13

Figure 106115951-A0101-12-0011-14
Figure 106115951-A0101-12-0011-14

20度/mm<DFOV2/f2<30度/mm (12) 20 degrees/mm<DFOV2/f2<30 degrees/mm (12)

上述Sag22、D22、Sag24、D24、BFL2、TTL2、Vd24、Vd25、Nd21、Nd23、DFOV2及f2之定義與第一實施例中Sag12、D12、Sag14、D14、BFL1、TTL1、Vd14、Vd15、Nd11、Nd13、DFOV1及f1之定義相同，在此皆不加以贅述。 The above definitions of Sag2 2 , D2 2 , Sag2 4 , D2 4 , BFL2, TTL2, Vd2 4 , Vd2 5 , Nd2 1 , Nd2 3 , DFOV2 and f2 are the same as those of Sag1 2 , D1 2 , Sag1 4 , D1 in the first embodiment 4. The definitions of BFL1, TTL1, Vd1 4 , Vd1 5 , Nd1 1 , Nd1 3 , DFOV1 and f1 are the same, and will not be repeated here.

利用上述透鏡、光圈ST2及至少滿足條件(7)至條件(12)其中一條件之設計，使得廣角鏡頭2能有效的縮短鏡頭總長度、有效的縮小光圈值、有效的修正像差、抗劇烈環境溫度變化。 Utilizing the above-mentioned lens, aperture ST2, and a design that meets at least one of the conditions (7) to (12), the wide-angle lens 2 can effectively shorten the total length of the lens, effectively reduce the aperture value, effectively correct aberrations, and resist severe environments temperature change.

若條件(11)Nd23-Nd21的數值小於0.35，在縮短廣角鏡頭2的鏡頭總長上會較為困難。因此，Nd23-Nd21的數值至少須大於或等於0.35，所以最佳效果範圍為0.59

Figure 106115951-A0101-12-0011-63
Nd23-Nd21
Figure 106115951-A0101-12-0011-65
0.35，符合該範圍則能有效縮短鏡頭總長。 If the value of condition (11) Nd2 3 -Nd2 1 is less than 0.35, it will be more difficult to shorten the total length of the wide-angle lens 2. Therefore, the value of Nd2 3 -Nd2 1 must be at least greater than or equal to 0.35, so the best effect range is 0.59
Figure 106115951-A0101-12-0011-63
Nd2 3 -Nd2 1
Figure 106115951-A0101-12-0011-65
0.35, meeting this range can effectively shorten the total length of the lens.

表四為第3圖中廣角鏡頭2之各透鏡之相關參數表，表四資料顯示，第二實施例之廣角鏡頭2之有效焦距等於3.683mm、光圈值等於2.8、鏡頭總長度等於23.850mm、對角線視場等於97.63度。 Table 4 is a table of relevant parameters of each lens of the wide-angle lens 2 in Figure 3. The data in Table 4 shows that the effective focal length of the wide-angle lens 2 of the second embodiment is equal to 3.683mm, the aperture value is equal to 2.8, and the total lens length is equal to 23.850mm, diagonally The linear field of view is equal to 97.63 degrees.

Figure 106115951-A0101-12-0012-16
Figure 106115951-A0101-12-0012-16
Figure 106115951-A0101-12-0013-17
Figure 106115951-A0101-12-0013-17

表四中各個透鏡之非球面表面凹陷度z由下列公式所得到：z=ch2/{1+[1-(k+1)c2h2]1/2}+Ah4+Bh6+Ch8+Dh10+Eh12+Fh14+Gh16 The concavity z of the aspheric surface of each lens in Table 4 is obtained by the following formula: z=ch 2 /{1+[1-(k+1)c 2 h 2 ] 1/2 }+Ah 4 +Bh 6 + Ch 8 +Dh 10 +Eh 12 +Fh 14 +Gh 16

其中：c：曲率；h：透鏡表面任一點至光軸之垂直距離；k：圓錐係數；A~G：非球面係數。 Among them: c: curvature; h: the vertical distance from any point on the lens surface to the optical axis; k: conic coefficient; A~G: aspherical coefficient.

表五為表四中各個透鏡之非球面表面之相關參數表，其中k為圓錐係數(Conic Constant)、A~G為非球面係數。 Table 5 is a table of relevant parameters of the aspheric surface of each lens in Table 4, where k is the Conic Constant and A~G are the aspheric coefficients.

Figure 106115951-A0101-12-0013-18
Figure 106115951-A0101-12-0013-18

表六為條件(7)至條件(12)中各參數值及條件(7)至條件(12)之計算值，由表六可知，第二實施例之廣角鏡頭2皆能滿足條件(7)至條 件(12)之要求。 Table 6 shows the values of the parameters in Condition (7) to Condition (12) and the calculated values of Condition (7) to Condition (12). From Table 6 we can see that the wide-angle lens 2 of the second embodiment can all satisfy the conditions (7) to The requirement of condition (12).

Figure 106115951-A0101-12-0014-19
Figure 106115951-A0101-12-0014-19

另外，第二實施例之廣角鏡頭2的光學性能也可達到要求，這可從第4A至第4C圖看出。第4A圖所示的，是第二實施例之廣角鏡頭2的縱向像差(Longitudinal Aberration)圖。第4B圖所示的，是第二實施例之廣角鏡頭2的場曲(Field Curvature)圖。第4C圖所示的，是第二實施例之廣角鏡頭2的畸變(Distortion)圖。 In addition, the optical performance of the wide-angle lens 2 of the second embodiment can also meet the requirements, which can be seen from Figures 4A to 4C. FIG. 4A shows the Longitudinal Aberration diagram of the wide-angle lens 2 of the second embodiment. Figure 4B shows the field curvature of the wide-angle lens 2 of the second embodiment. FIG. 4C shows a distortion (distortion) diagram of the wide-angle lens 2 of the second embodiment.

由第4A圖可看出，第二實施例之廣角鏡頭2對波長為0.455μm、0.502μm、0.558μm、0.614μm、0.661μm之光線所產生的縱向像差值介於-0.025mm至0.025mm之間。 It can be seen from Fig. 4A that the wide-angle lens 2 of the second embodiment has longitudinal aberration values between -0.025mm and 0.025mm for light with wavelengths of 0.455μm, 0.502μm, 0.558μm, 0.614μm, and 0.661μm. between.

由第4B圖可看出，第二實施例之廣角鏡頭2對波長為0.455μm、0.502μm、0.558μm、0.614μm、0.661μm之光線，於子午(Tangential)方向與弧矢(Sagittal)方向之場曲介於-0.035mm至0.05mm之間。 It can be seen from Figure 4B that the wide-angle lens 2 of the second embodiment has a field of light with wavelengths of 0.455μm, 0.502μm, 0.558μm, 0.614μm, 0.661μm in the Tangential direction and the Sagittal direction. The curve is between -0.035mm to 0.05mm.

由第4C圖(圖中的5條線幾乎重合，以致於看起來只有一條 線)可看出，第二實施例之廣角鏡頭2對波長為0.455μm、0.502μm、0.558μm、0.614μm、0.661μm之光線所產生的畸變介於-4.0%至0%之間。 It can be seen from Figure 4C (the five lines in the figure almost overlap, so that there is only one line), it can be seen that the wide-angle lens 2 of the second embodiment has wavelengths of 0.455μm, 0.502μm, 0.558μm, 0.614μm, 0.661μm The distortion produced by the light is between -4.0% and 0%.

顯見第二實施例之廣角鏡頭2之縱向像差、場曲、畸變都能被有效修正，從而得到較佳的光學性能。 It is obvious that the longitudinal aberration, curvature of field, and distortion of the wide-angle lens 2 of the second embodiment can be effectively corrected to obtain better optical performance.

請參閱第5圖，第5圖係依據本發明之廣角鏡頭之第三實施例的透鏡配置示意圖。廣角鏡頭3沿著一光軸OA3從一物側至一像側依序包括一第一透鏡L31、一第二透鏡L32、一第三透鏡L33、一光圈ST3、一第四透鏡L34、一第五透鏡L35、一第六透鏡L36及一濾光片OF3。成像時，來自物側之光線最後成像於一成像面IMA3上。 Please refer to FIG. 5. FIG. 5 is a schematic diagram of the lens configuration of the third embodiment of the wide-angle lens according to the present invention. The wide-angle lens 3 includes a first lens L31, a second lens L32, a third lens L33, an aperture ST3, a fourth lens L34, and a fifth lens in order from an object side to an image side along an optical axis OA3. Lens L35, a sixth lens L36 and a filter OF3. When imaging, the light from the object side is finally imaged on an imaging surface IMA3.

第一透鏡L31為彎月型透鏡具有負屈光力由玻璃材質製成，其物側面S31為凸面，像側面S32為凹面，物側面S31與像側面S32皆為球面表面。 The first lens L31 is a meniscus lens with negative refractive power and is made of glass. The object side surface S31 is a convex surface, the image side surface S32 is a concave surface, and both the object side surface S31 and the image side surface S32 are spherical surfaces.

第二透鏡L32為彎月型透鏡具有負屈光力由玻璃材質製成，其物側面S33為凸面，像側面S34為凹面，物側面S33與像側面S34皆為非球面表面。 The second lens L32 is a meniscus lens with negative refractive power and is made of glass. The object side surface S33 is a convex surface, the image side surface S34 is a concave surface, and both the object side surface S33 and the image side surface S34 are aspherical surfaces.

第三透鏡L33為雙凸透鏡具有正屈光力由玻璃材質製成，其物側面S35為凸面，像側面S36為凸面，物側面S35與像側面S36皆為球面表面。 The third lens L33 is a biconvex lens with positive refractive power and is made of glass. The object side S35 is convex, the image side S36 is convex, and both the object side S35 and the image side S36 are spherical surfaces.

第四透鏡L34為彎月型透鏡具有正屈光力由玻璃材質製成，其物側面S38為凹面，像側面S39為凸面，物側面S38與像側面S39皆為球面表面。 The fourth lens L34 is a meniscus lens with positive refractive power and is made of glass. The object side surface S38 is concave, the image side surface S39 is convex, and both the object side surface S38 and the image side surface S39 are spherical surfaces.

第五透鏡L35為彎月型透鏡具有負屈光力由玻璃材質製 成，其物側面S39為凹面，像側面S310為凸面，物側面S39與像側面S310皆為球面表面。 The fifth lens L35 is a meniscus lens with negative refractive power and is made of glass. The object side surface S39 is concave, the image side surface S310 is convex, and both the object side surface S39 and the image side surface S310 are spherical surfaces.

上述第四透鏡L34與第五透鏡L35膠合。 The fourth lens L34 and the fifth lens L35 are cemented.

第六透鏡L36為雙凸透鏡具有正屈光力由玻璃材質製成，其物側面S311為凸面，像側面S312為凸面，物側面S311與像側面S312皆為非球面表面。 The sixth lens L36 is a biconvex lens with positive refractive power and is made of glass. The object side surface S311 is a convex surface, the image side surface S312 is a convex surface, and both the object side surface S311 and the image side surface S312 are aspherical surfaces.

濾光片OF3其物側面S313與像側面S314皆為平面。 The object side S313 and the image side S314 of the filter OF3 are both flat surfaces.

另外，第三實施例中的廣角鏡頭3至少滿足底下其中一條件：

Figure 106115951-A0101-12-0016-20
In addition, the wide-angle lens 3 in the third embodiment meets at least one of the following conditions:
Figure 106115951-A0101-12-0016-20

Figure 106115951-A0101-12-0016-21
Figure 106115951-A0101-12-0016-21

Figure 106115951-A0101-12-0016-22
Figure 106115951-A0101-12-0016-22

Figure 106115951-A0101-12-0016-23
Figure 106115951-A0101-12-0016-23

Figure 106115951-A0101-12-0016-24
Figure 106115951-A0101-12-0016-24

20度/mm<DFOV3/f3<30度/mm (18) 20 degrees/mm<DFOV3/f3<30 degrees/mm (18)

上述Sag32、D32、Sag34、D34、BFL3、TTL3、Vd34、Vd35、Nd31、Nd33、DFOV3及f3之定義與第一實施例中Sag12、D12、Sag14、D14、BFL1、TTL1、Vd14、Vd15、Nd11、Nd13、DFOV1及f1之定義相同，在此皆不加以贅述。 Above Sag3 2, D3 2, Sag3 4 , D3 4, BFL3, TTL3, Vd3 4, Vd3 5, Nd3 1, Nd3 3, and f3 is defined DFOV3 of the first embodiment Sag1 2, D1 2, Sag1 4 , D1 4. The definitions of BFL1, TTL1, Vd1 4 , Vd1 5 , Nd1 1 , Nd1 3 , DFOV1 and f1 are the same, and will not be repeated here.

利用上述透鏡、光圈ST3及至少滿足條件(13)至條件(18)其中一條件之設計，使得廣角鏡頭3能有效的縮短鏡頭總長度、有效的縮小光圈值、有效的修正像差、抗劇烈環境溫度變化。 Using the above-mentioned lens, aperture ST3, and a design that satisfies at least one of the conditions (13) to (18), the wide-angle lens 3 can effectively shorten the total length of the lens, effectively reduce the aperture value, effectively correct aberrations, and resist severe environments temperature change.

若條件(13)Sag32/D32的數值小於0.24，則使消球差的功能欠佳。因此，Sag32/D32的數值至少須大於或等於0.24，所以最佳合適範圍為0.5

Figure 106115951-A0101-12-0017-66
Sag32/D32
Figure 106115951-A0101-12-0017-67
0.24，符合該範圍則具有最佳消球差條件。 If the value of condition (13) Sag3 2 /D3 2 is less than 0.24, the aberration function is not good. Therefore, the value of Sag3 2 /D3 2 must be at least greater than or equal to 0.24, so the best suitable range is 0.5
Figure 106115951-A0101-12-0017-66
Sag3 2 /D3 2
Figure 106115951-A0101-12-0017-67
0.24. If it meets this range, it has the best aspheric conditions.

若條件(14)Sag34/D34的數值小於0.29，則使消慧差的功能欠佳。因此，Sag34/D34的數值至少須大於或等於0.35，但是Sag34/D34的數值若大於1，則有鏡片製作上的困難，所以最佳合適範圍為1

Figure 106115951-A0101-12-0017-68
Sag34/D34
Figure 106115951-A0101-12-0017-69
0.29，符合該範圍則具有最佳消慧差條件。 If the value of condition (14) Sag3 4 /D3 4 is less than 0.29, the function of eliminating coma is not good. Therefore, the value of Sag3 4 /D3 4 must be at least greater than or equal to 0.35, but if the value of Sag3 4 /D3 4 is greater than 1, there will be difficulties in lens production, so the best suitable range is 1.
Figure 106115951-A0101-12-0017-68
Sag3 4 /D3 4
Figure 106115951-A0101-12-0017-69
0.29, if it meets this range, it has the best acoma aberration condition.

表七為第5圖中廣角鏡頭3之各透鏡之相關參數表，表七資料顯示，第三實施例之廣角鏡頭3之有效焦距等於3.685mm、光圈值等於2.8、鏡頭總長度等於23.906mm、對角線視場等於97.46度。 Table 7 is a table of related parameters of each lens of the wide-angle lens 3 in Figure 5. The data in Table 7 shows that the effective focal length of the wide-angle lens 3 of the third embodiment is 3.685mm, the aperture value is equal to 2.8, and the total lens length is equal to 23.906mm, diagonally The linear field of view is equal to 97.46 degrees.

Figure 106115951-A0101-12-0017-25
Figure 106115951-A0101-12-0017-25
Figure 106115951-A0101-12-0018-26
Figure 106115951-A0101-12-0018-26

表七中各個透鏡之非球面表面凹陷度z由下列公式所得到：z=ch2/{1+[1-(k+1)c2h2]1/2}+Ah4+Bh6+Ch8+Dh10+Eh12+Fh14+Gh16 The concavity z of the aspheric surface of each lens in Table 7 is obtained by the following formula: z=ch 2 /{1+[1-(k+1)c 2 h 2 ] 1/2 }+Ah 4 +Bh 6 + Ch 8 +Dh 10 +Eh 12 +Fh 14 +Gh 16

其中：c：曲率；h：透鏡表面任一點至光軸之垂直距離；k：圓錐係數；A~G：非球面係數。表八為表七中各個透鏡之非球面表面之相關參數表，其中k為圓錐係數(Conic Constant)、A~G為非球面係數。 Among them: c: curvature; h: the vertical distance from any point on the lens surface to the optical axis; k: conic coefficient; A~G: aspherical coefficient. Table 8 is a table of related parameters of the aspheric surface of each lens in Table 7, where k is the Conic Constant and A~G are the aspheric coefficients.

Figure 106115951-A0101-12-0018-27
Figure 106115951-A0101-12-0018-27
Figure 106115951-A0101-12-0019-28
Figure 106115951-A0101-12-0019-28

表九為條件(13)至條件(18)中各參數值及條件(13)至條件(18)之計算值，由表九可知，第三實施例之廣角鏡頭3皆能滿足條件(13)至條件(18)之要求。 Table 9 shows the parameter values of conditions (13) to (18) and the calculated values of conditions (13) to (18). It can be seen from Table 9 that the wide-angle lens 3 of the third embodiment can all satisfy the conditions (13) to The requirement of condition (18).

Figure 106115951-A0101-12-0019-29
Figure 106115951-A0101-12-0019-29

另外，第三實施例之廣角鏡頭3的光學性能也可達到要求，這可從第6A至第6C圖看出。第6A圖所示的，是第三實施例之廣角鏡頭3的縱向像差(Longitudinal Aberration)圖。第6B圖所示的，是第三實施例之廣角鏡頭3的場曲(Field Curvature)圖。第6C圖所示的，是第三實施例之廣角鏡頭3的畸變(Distortion)圖。 In addition, the optical performance of the wide-angle lens 3 of the third embodiment can also meet the requirements, which can be seen from Figures 6A to 6C. Fig. 6A shows a longitudinal aberration diagram of the wide-angle lens 3 of the third embodiment. FIG. 6B shows a field curvature diagram of the wide-angle lens 3 of the third embodiment. FIG. 6C shows a distortion (distortion) diagram of the wide-angle lens 3 of the third embodiment.

由第6A圖可看出，第三實施例之廣角鏡頭3對波長為0.455μm、0.502μm、0.558μm、0.614μm、0.661μm之光線所產生的縱向像差值介於-0.01mm至0.015mm之間。 It can be seen from Fig. 6A that the wide-angle lens 3 of the third embodiment has longitudinal aberration values of -0.01mm to 0.015mm for light with wavelengths of 0.455μm, 0.502μm, 0.558μm, 0.614μm, and 0.661μm. between.

由第6B圖可看出，第三實施例之廣角鏡頭3對波長為0.455μm、0.502μm、0.558μm、0.614μm、0.661μm之光線，於子午(Tangential)方向與弧矢(Sagittal)方向之場曲介於-0.03mm至0.03mm之間。 It can be seen from Figure 6B that the wide-angle lens 3 of the third embodiment has a field of light with wavelengths of 0.455μm, 0.502μm, 0.558μm, 0.614μm, 0.661μm in the Tangential direction and the Sagittal direction. The curve is between -0.03mm to 0.03mm.

由第6C圖(圖中的5條線幾乎重合，以致於看起來只有一條線)可看出，第三實施例之廣角鏡頭3對波長為0.455μm、0.502μm、0.558μm、0.614μm、0.661μm之光線所產生的畸變介於-4.0%至0%之間。 From Figure 6C (the five lines in the figure are almost overlapped, so that there is only one line), it can be seen that the wide-angle lens 3 of the third embodiment has wavelengths of 0.455μm, 0.502μm, 0.558μm, 0.614μm, 0.661μm The distortion produced by the light is between -4.0% and 0%.

顯見第三實施例之廣角鏡頭3之縱向像差、場曲、畸變都能被有效修正，從而得到較佳的光學性能。 It is obvious that the longitudinal aberration, curvature of field, and distortion of the wide-angle lens 3 of the third embodiment can be effectively corrected, thereby obtaining better optical performance.

本發明符合的公式以Sag2/D2

Figure 106115951-A0101-12-0020-70
0.24、Sag4/D4
Figure 106115951-A0101-12-0020-71
0.29、Vd4-Vd5
Figure 106115951-A0101-12-0020-74
50及Nd3-Nd1
Figure 106115951-A0101-12-0020-76
0.35為中心，本發明實施例的數值也落入其餘公式的範圍內。公式Sag2/D2
Figure 106115951-A0101-12-0020-77
0.24，可使整體球差修正表現有助益，其最佳合適範圍為0.5
Figure 106115951-A0101-12-0020-78
Sag2/D2
Figure 106115951-A0101-12-0020-79
0.24。公式Sag4/D4
Figure 106115951-A0101-12-0020-80
0.29，可使整體彗差修正表現有助益，其最佳合適範圍為1
Figure 106115951-A0101-12-0020-82
Sag4/D4
Figure 106115951-A0101-12-0020-83
0.29。公式Vd4-Vd5
Figure 106115951-A0101-12-0020-84
50，可使消色差表現較佳，其最佳合適範圍為79
Figure 106115951-A0101-12-0020-85
Vd4-Vd5
Figure 106115951-A0101-12-0020-87
50。公式Nd3-Nd1
Figure 106115951-A0101-12-0020-89
0.35，可有效縮短鏡頭總長，其最佳合適範圍為0.59
Figure 106115951-A0101-12-0020-90
Nd3-Nd1
Figure 106115951-A0101-12-0020-91
0.35。 The formula in accordance with the present invention is as Sag 2 /D 2
Figure 106115951-A0101-12-0020-70
0.24, Sag 4 /D 4
Figure 106115951-A0101-12-0020-71
0.29, Vd 4 -Vd 5
Figure 106115951-A0101-12-0020-74
50 and Nd 3 -Nd 1
Figure 106115951-A0101-12-0020-76
0.35 is the center, and the numerical value in the embodiment of the present invention also falls within the range of other formulas. Formula Sag 2 /D 2
Figure 106115951-A0101-12-0020-77
0.24, can make the overall spherical aberration correction performance helpful, the best suitable range is 0.5
Figure 106115951-A0101-12-0020-78
Sag 2 /D 2
Figure 106115951-A0101-12-0020-79
0.24. Formula Sag 4 /D 4
Figure 106115951-A0101-12-0020-80
0.29, can make the overall coma correction performance helpful, the best suitable range is 1
Figure 106115951-A0101-12-0020-82
Sag 4 /D 4
Figure 106115951-A0101-12-0020-83
0.29. Formula Vd 4 -Vd 5
Figure 106115951-A0101-12-0020-84
50, can make achromatic performance better, the best suitable range is 79
Figure 106115951-A0101-12-0020-85
Vd 4 -Vd 5
Figure 106115951-A0101-12-0020-87
50. Formula Nd 3 -Nd 1
Figure 106115951-A0101-12-0020-89
0.35, can effectively shorten the total length of the lens, the best suitable range is 0.59
Figure 106115951-A0101-12-0020-90
Nd 3 -Nd 1
Figure 106115951-A0101-12-0020-91
0.35.

雖然本發明已以實施方式揭露如上，然其並非用以限定本發明，任何熟悉此技藝者，在不脫離本發明的精神和範圍內，當可作各 種的更動與潤飾，因此本發明的保護範圍當視後附的申請專利範圍所界定者為準。 Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone familiar with the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection of the present invention The scope shall be subject to the scope of the attached patent application.

1‧‧‧廣角鏡頭 1‧‧‧Wide-angle lens

L11‧‧‧第一透鏡 L11‧‧‧First lens

L12‧‧‧第二透鏡 L12‧‧‧Second lens

L13‧‧‧第三透鏡 L13‧‧‧Third lens

L14‧‧‧第四透鏡 L14‧‧‧Fourth lens

L15‧‧‧第五透鏡 L15‧‧‧Fifth lens

L16‧‧‧第六透鏡 L16‧‧‧Sixth lens

ST1‧‧‧光圈 ST1‧‧‧Aperture

OF1‧‧‧濾光片 OF1‧‧‧Filter

OA1‧‧‧光軸 OA1‧‧‧Optical axis

IMA1‧‧‧成像面 IMA1‧‧‧Image surface

S11、S12、S13、S14、S15‧‧‧面 S11, S12, S13, S14, S15‧‧‧face

S16、S17、S18、S19、S110‧‧‧面 S16, S17, S18, S19, S110‧‧‧face

S111、S112、S113、S114‧‧‧面 S111, S112, S113, S114‧‧‧ surface

Claims (10)

一種廣角鏡頭，主要由一第一透鏡、一第二透鏡、一第三透鏡、一第四透鏡、一第五透鏡以及一第六透鏡組成；該第一透鏡具有負屈光力，該第一透鏡為彎月型透鏡；該第二透鏡具有負屈光力，該第二透鏡包括一凸面朝向一物側；該第三透鏡具有正屈光力，該第三透鏡包括一凸面朝向該物側；該第四透鏡具有正屈光力，該第四透鏡包括一凸面朝向一像側；該第五透鏡具有負屈光力，該第五透鏡包括一凸面朝向該像側；該第六透鏡具有正屈光力；其中該第一透鏡、該第二透鏡、該第三透鏡、該第四透鏡、該第五透鏡以及該第六透鏡沿著一光軸從該物側至該像側依序排列；其中該廣角鏡頭滿足以下條件：20度/mm<DFOV/f<30度/mm；其中，DFOV為該廣角鏡頭之一對角線視場，該對角線視場之單位為度，f為該廣角鏡頭之一有效焦距，該有效焦距之單位為mm。 A wide-angle lens, mainly composed of a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens; the first lens has negative refractive power, and the first lens is curved Moon lens; the second lens has a negative refractive power, the second lens includes a convex surface facing an object side; the third lens has a positive refractive power, the third lens includes a convex surface facing the object side; the fourth lens has a positive Refractive power, the fourth lens includes a convex surface facing an image side; the fifth lens has a negative refractive power, the fifth lens includes a convex surface facing the image side; the sixth lens has a positive refractive power; wherein the first lens, the second lens The two lenses, the third lens, the fourth lens, the fifth lens, and the sixth lens are arranged in order from the object side to the image side along an optical axis; wherein the wide-angle lens satisfies the following conditions: 20 degrees/mm <DFOV/f<30 degrees/mm; Wherein, DFOV is a diagonal field of view of the wide-angle lens, the unit of the diagonal field of view is degrees, f is an effective focal length of the wide-angle lens, and the unit of the effective focal length is mm. 一種廣角鏡頭，主要由一第一透鏡、一第二透鏡、一第三透鏡、一第四透鏡、一第五透鏡以及一第六透鏡組成；該第一透鏡具有負屈光力，該第一透鏡為彎月型透鏡；該第二透鏡具有負屈光力，該第二透鏡包括一凸面朝向一物側；該第三透鏡具有正屈光力，該第三透鏡包括一凸面朝向該物側；該第四透鏡具有正屈光力，該第四透鏡包括一凸面朝向一像側；該第五透鏡具有負屈光力，該第五透鏡包括一凸面朝向該像側； 該第六透鏡具有正屈光力；其中該第一透鏡、該第二透鏡、該第三透鏡、該第四透鏡、該第五透鏡以及該第六透鏡沿著一光軸從該物側至該像側依序排列；其中該廣角鏡頭滿足以下條件：Vd4-Vd5
Figure 106115951-A0305-02-0026-18
50；其中，Vd4為該第四透鏡之一阿貝係數，Vd5為該第五透鏡之一阿貝係數。 A wide-angle lens, mainly composed of a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens; the first lens has negative refractive power, and the first lens is curved Moon lens; the second lens has a negative refractive power, the second lens includes a convex surface facing an object side; the third lens has a positive refractive power, the third lens includes a convex surface facing the object side; the fourth lens has a positive Refractive power, the fourth lens includes a convex surface facing an image side; the fifth lens has a negative refractive power, the fifth lens includes a convex surface facing the image side; the sixth lens has a positive refractive power; wherein the first lens, the second lens The two lenses, the third lens, the fourth lens, the fifth lens, and the sixth lens are arranged in order from the object side to the image side along an optical axis; wherein the wide-angle lens satisfies the following conditions: Vd 4 -Vd 5
Figure 106115951-A0305-02-0026-18
50; where Vd 4 is an Abbe coefficient of the fourth lens, and Vd 5 is an Abbe coefficient of the fifth lens. 一種廣角鏡頭，主要由一第一透鏡、一第二透鏡、一第三透鏡、一第四透鏡、一第五透鏡以及一第六透鏡組成；該第一透鏡具有負屈光力，該第一透鏡為彎月型透鏡；該第二透鏡具有負屈光力，該第二透鏡包括一凸面朝向一物側；該第三透鏡具有正屈光力，該第三透鏡包括一凸面朝向該物側；該第四透鏡具有正屈光力，該第四透鏡包括一凸面朝向一像側；該第五透鏡具有負屈光力，該第五透鏡包括一凸面朝向該像側；該第六透鏡具有正屈光力；其中該第一透鏡、該第二透鏡、該第三透鏡、該第四透鏡、該第五透鏡以及該第六透鏡沿著一光軸從該物側至該像側依序排列；其中該廣角鏡頭滿足以下條件：Sag2/D2
Figure 106115951-A0305-02-0026-19
0.24；其中，Sag2為該第一透鏡之一像側面之一有效直徑凹陷量，D2為該第一透鏡之該像側面之一有效直徑。 A wide-angle lens, mainly composed of a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens; the first lens has negative refractive power, and the first lens is curved Moon lens; the second lens has a negative refractive power, the second lens includes a convex surface facing an object side; the third lens has a positive refractive power, the third lens includes a convex surface facing the object side; the fourth lens has a positive Refractive power, the fourth lens includes a convex surface facing an image side; the fifth lens has a negative refractive power, the fifth lens includes a convex surface facing the image side; the sixth lens has a positive refractive power; wherein the first lens, the second lens The two lenses, the third lens, the fourth lens, the fifth lens, and the sixth lens are arranged in order from the object side to the image side along an optical axis; wherein the wide-angle lens satisfies the following condition: Sag 2 /D 2
Figure 106115951-A0305-02-0026-19
0.24; Wherein, Sag 2 is an effective diameter depression of an image side surface of the first lens, and D 2 is an effective diameter of the image side surface of the first lens. 一種廣角鏡頭，主要由一第一透鏡、一第二透鏡、一第三透鏡、一第四透鏡、一第五透鏡以及一第六透鏡組成；該第一透鏡具有負屈光力，該第一透鏡為彎月型透鏡；該第二透鏡具有負屈光力，該第二透鏡包括一凸面朝向一物側；該第三透鏡具有正屈光力，該第三透鏡包括一凸面朝向該物側；該第四透鏡具有正屈光力，該第四透鏡包括一凸面朝向一像側；該第五透鏡具有負屈光力，該第五透鏡包括一凸面朝向該像側；該第六透鏡具有正屈光力；其中該第一透鏡、該第二透鏡、該第三透鏡、該第四透鏡、該第五透鏡以及該第六透鏡沿著一光軸從該物側至該像側依序排列；其中該廣角鏡頭滿足以下條件：Sag4/D4
Figure 106115951-A0305-02-0027-20
0.29；其中，Sag4為該第二透鏡之一像側面之一有效直徑凹陷量，D4為該第二透鏡之該像側面之一有效直徑。 A wide-angle lens, mainly composed of a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens; the first lens has negative refractive power, and the first lens is curved Moon lens; the second lens has a negative refractive power, the second lens includes a convex surface facing an object side; the third lens has a positive refractive power, the third lens includes a convex surface facing the object side; the fourth lens has a positive Refractive power, the fourth lens includes a convex surface facing an image side; the fifth lens has a negative refractive power, the fifth lens includes a convex surface facing the image side; the sixth lens has a positive refractive power; wherein the first lens, the second lens The two lenses, the third lens, the fourth lens, the fifth lens, and the sixth lens are arranged in order from the object side to the image side along an optical axis; wherein the wide-angle lens satisfies the following conditions: Sag 4 /D 4
Figure 106115951-A0305-02-0027-20
0.29; Wherein, Sag 4 is an effective diameter depression of an image side surface of the second lens, and D 4 is an effective diameter of the image side surface of the second lens. 一種廣角鏡頭，主要由一第一透鏡、一第二透鏡、一第三透鏡、一第四透鏡、一第五透鏡以及一第六透鏡組成；該第一透鏡具有負屈光力，該第一透鏡為彎月型透鏡；該第二透鏡具有負屈光力，該第二透鏡包括一凸面朝向一物側；該第三透鏡具有正屈光力，該第三透鏡包括一凸面朝向該物側；該第四透鏡具有正屈光力，該第四透鏡包括一凸面朝向一像側；該第五透鏡具有負屈光力，該第五透鏡包括一凸面朝向該像側；該第六透鏡具有正屈光力； 其中該第一透鏡、該第二透鏡、該第三透鏡、該第四透鏡、該第五透鏡以及該第六透鏡沿著一光軸從該物側至該像側依序排列；其中該廣角鏡頭滿足以下條件：Nd3-Nd1
Figure 106115951-A0305-02-0028-21
0.35；其中，Nd1為該第一透鏡之一折射率，Nd3為該第三透鏡之一折射率。 A wide-angle lens, mainly composed of a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens; the first lens has negative refractive power, and the first lens is curved Moon lens; the second lens has a negative refractive power, the second lens includes a convex surface facing an object side; the third lens has a positive refractive power, the third lens includes a convex surface facing the object side; the fourth lens has a positive Refractive power, the fourth lens includes a convex surface facing an image side; the fifth lens has a negative refractive power, the fifth lens includes a convex surface facing the image side; the sixth lens has a positive refractive power; wherein the first lens, the second lens The two lenses, the third lens, the fourth lens, the fifth lens, and the sixth lens are arranged in order from the object side to the image side along an optical axis; wherein the wide-angle lens satisfies the following conditions: Nd 3 -Nd 1
Figure 106115951-A0305-02-0028-21
0.35; where Nd 1 is a refractive index of the first lens, and Nd 3 is a refractive index of the third lens. 如申請專利範圍第1項至第5項中任一請求項所述之廣角鏡頭，其中該廣角鏡頭滿足以下條件：0.2
Figure 106115951-A0305-02-0028-22
BFL/TTL
Figure 106115951-A0305-02-0028-23
0.5；其中，BFL為該第六透鏡之一像側面至一成像面於該光軸上之一間距，TTL為該第一透鏡之一物側面至該成像面於該光軸上之一間距。 For the wide-angle lens described in any one of claims 1 to 5 in the scope of the patent application, the wide-angle lens meets the following conditions: 0.2
Figure 106115951-A0305-02-0028-22
BFL/TTL
Figure 106115951-A0305-02-0028-23
0.5; Wherein, BFL is a distance from an image side of the sixth lens to an imaging surface on the optical axis, and TTL is a distance from an object side of the first lens to the imaging surface on the optical axis. 如申請專利範圍第1項至第5項中任一請求項所述之廣角鏡頭，其中該廣角鏡頭滿足以下條件：0.5
Figure 106115951-A0305-02-0028-24
Sag2/D2
Figure 106115951-A0305-02-0028-25
0.24；1
Figure 106115951-A0305-02-0028-26
Sag4/D4
Figure 106115951-A0305-02-0028-27
0.29；其中，Sag2為該第一透鏡之一像側面之一有效直徑凹陷量，D2為該第一透鏡之該像側面之一有效直徑，Sag4為該第二透鏡之一像側面之一有效直徑凹陷量，D4為該第二透鏡之該像側面之一有效直徑。 For the wide-angle lens described in any one of claims 1 to 5 in the scope of the patent application, the wide-angle lens meets the following conditions: 0.5
Figure 106115951-A0305-02-0028-24
Sag 2 /D 2
Figure 106115951-A0305-02-0028-25
0.24; 1
Figure 106115951-A0305-02-0028-26
Sag 4 /D 4
Figure 106115951-A0305-02-0028-27
0.29; Wherein, Sag 2 is an effective diameter of an image side surface of the first lens, D 2 is an effective diameter of an image side surface of the first lens, and Sag 4 is an image side surface of the second lens An effective diameter depression, D 4 is an effective diameter of the image side surface of the second lens. 如申請專利範圍第1項至第5項中任一請求項所述之廣角鏡頭，其中該第一透鏡更包括一凸面朝向該物側以及一凹面朝向該像側，該第二透鏡更包括一凹面朝向該像側，該第三透鏡更包括一凹面朝向該像側，該第四透鏡更包括一凹面朝向該物側，該第五透鏡更包括一凹面朝向該物側以及一凸面朝向該像側，該第六透鏡為雙凸透鏡。 The wide-angle lens described in any one of claims 1 to 5 in the scope of the patent application, wherein the first lens further includes a convex surface facing the object side and a concave surface facing the image side, and the second lens further includes a concave surface Toward the image side, the third lens further includes a concave surface facing the image side, the fourth lens further includes a concave surface facing the object side, and the fifth lens further includes a concave surface facing the object side and a convex surface facing the image side , The sixth lens is a biconvex lens. 如申請專利範圍第1項至第5項中任一請求項所述之廣角鏡頭，其中該廣角鏡頭滿足以下條件：79
Figure 106115951-A0305-02-0029-28
Vd4-Vd5
Figure 106115951-A0305-02-0029-29
50；0.59
Figure 106115951-A0305-02-0029-30
Nd3-Nd1
Figure 106115951-A0305-02-0029-31
0.35；其中Vd4為該第四透鏡之一阿貝係數，Vd5為該第五透鏡之一阿貝係數，Nd1為該第一透鏡之一折射率，Nd3為該第三透鏡之一折射率。 For the wide-angle lens described in any one of claims 1 to 5 in the scope of the patent application, the wide-angle lens meets the following conditions: 79
Figure 106115951-A0305-02-0029-28
Vd 4 -Vd 5
Figure 106115951-A0305-02-0029-29
50; 0.59
Figure 106115951-A0305-02-0029-30
Nd 3 -Nd 1
Figure 106115951-A0305-02-0029-31
0.35; where Vd 4 is an Abbe number of the fourth lens, Vd 5 is an Abbe number of the fifth lens, Nd 1 is a refractive index of the first lens, and Nd 3 is one of the third lens Refractive index. 如申請專利範圍第1項至第5項中任一請求項所述之廣角鏡頭，其中：該第四透鏡以及該第五透鏡互相膠合；以及該第二透鏡以及該第六透鏡更包括至少一非球面表面。 The wide-angle lens according to any one of claims 1 to 5 in the scope of patent application, wherein: the fourth lens and the fifth lens are cemented with each other; and the second lens and the sixth lens further include at least one non- Spherical surface.
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